Matrix approaches are quick and simple ways to get an overall spatially-explicit picture of the ES in case study areas. The method is based on the idea of linking tabular spreadsheet data and spatial data together, i.e. joining external datasets to spatial units to create maps. A modified, transdisciplinary version of the spreadsheet-type method is GreenFrame, which uses an extensive set of spatial datasets grouped into themes (instead of using solely LULC data) combined with both scientific experts' and local actors' scorings (Kopperoinen et al. 2014).